#include <stdio.h>
#include <string.h>
 
union Data
{
	   int i;
	      float f;
	         char  str[20];
};
 
int main( )
{
	   union Data data;        
	    
	      printf( "Memory size occupied by data : %d\n", sizeof(data));
	       
	         return 0;
}
